Line Plots Frequency Tables 6 4 and Histograms

Line Plots, Frequency Tables, 6 -4 and Histograms Learn to organize data in line plots, frequency tables, and histograms.

Line Plots, Frequency Tables, 6 -4 and Histograms Vocabulary frequency table line plot histogram

Line Plots, Frequency Tables, 6 -4 and Histograms The frequency of a data value is the number of times it occurs. A frequency table tells the number of times an event, category, or group occurs.

Line Plots, Frequency Tables, 6 -4 and Histograms Additional Example 1: Using Tally Marks to Make a Frequency Table Students in Mr. Ray’s class recorded their fingerprint patterns. Which type of pattern do most students in Mr. Ray’s class have? whorl loop arch whorl arch whorl loop Make a table to organize the data.

Line Plots, Frequency Tables, 6 -4 and Histograms Reading Math A group of four tally marks with a line through it means five. t llll = 5 llll = 10

Line Plots, Frequency Tables, 6 -4 and Histograms Additional Example 1 Continued Students in Mr. Ray’s class recorded their fingerprint patterns. Which type of pattern do more students in Mr. Ray’s class have? whorl loop arch whorl arch whorl Step 2: For each fingerprint, make a tally mark in the appropriate column. loop Number of Fingerprint Patterns Whorl llll Step 1: Make a column for each fingerprint pattern. Arch Loop llll l llll Most students in Mr. Ray’s class have an arch fingerprint.

Line Plots, Frequency Tables, 6 -4 and Histograms Check It Out: Example 1 Students in Ms. Gracie’s class recorded their fingerprint patterns. Which type of pattern do more students in Ms. Gracie’s class have? whorl loop arch whorl loop whorl arch loop Make a table to organize the data.

Line Plots, Frequency Tables, 6 -4 and Histograms Check It Out: Example 1 Continued Students in Ms. Gracie’s class recorded their fingerprint patterns. Which type of pattern do more students in Ms. Gracie’s class have? whorl loop arch whorl loop whorl arch loop Number of Fingerprint Patterns Whorl Arch Loop llll Step 1: Make a column for each fingerprint pattern. Step 2: For each fingerprint, make a tally mark in the appropriate column. Most students in Ms. Gracie’s class have a whorl fingerprint.

Line Plots, Frequency Tables, 6 -4 and Histograms A line plot uses a number line and x’s or other symbols to show frequencies of values.

Line Plots, Frequency Tables, 6 -4 and Histograms Additional Example 2: Making a Line Plot Students collected tennis balls for a project. The number of balls collected by the students is recorded in the table. Make a line plot of the data. Tennis Balls Collected 10 14 11 16 11 10 14 10 15 15 10 11 Step 1: Draw a number line. Step 2: For each tennis ball, use an x on the number line to represent how many were collected. x x x x 5 6 7 8 x x x 9 10 11 12 13 14 15 16

Line Plots, Frequency Tables, 6 -4 and Histograms Check It Out: Example 2 Students collected aluminum cans for a project. The number of cans collected by the students is recorded in the table. Make a line plot of the data. Cans Collected 5 7 11 14 11 5 7 14 14 5 15 11 Step 1: Draw a number line. Step 2: For each aluminum can, use an x on the number line to represent how many were collected. x x x 5 6 7 8 x xx x x 9 10 11 12 13 14 15 16

Line Plots, Frequency Tables, 6 -4 and Histograms Additional Example 3: Making a Frequency Table with Intervals Use the data in the table to make a frequency table with intervals. Pages Read Last Weekend 12 15 40 19 7 5 22 34 37 18

Line Plots, Frequency Tables, 6 -4 and Histograms Additional Example 3 Continued Use the data in the table to make a frequency table with intervals Pages Read Last Weekend Number 1– 10 11– 20 21– 30 31– 40 Frequency 2 4 1 3 Step 1: Choose equal intervals. Step 2: Find the number of data values in each interval. Write these numbers in the “Frequency” row. This table shows that 2 students read between 1 and 10 pages, 4 students read between 11 and 20 pages, 1 person read between 21 and 30 pages, and 3 people read between 31 and 40 pages last weekend.

Line Plots, Frequency Tables, 6 -4 and Histograms Check It Out: Example 3 Use the data in the table to make a frequency table with intervals. Number of Miles Driven on Saturday 17 29 9 19 7 5 27 34 21 38

Line Plots, Frequency Tables, 6 -4 and Histograms Check It Out: Example 3 Continued Use the data in the table to make a frequency table with intervals. Number of Miles Driven on Saturday Number 1– 10 11– 20 21– 30 31– 40 Frequency 3 2 Step 1: Choose equal intervals. Step 2: Find the number of data values in each interval. Write these numbers in the “Frequency” row. This table shows that 3 people drove between 1 and 10 miles, 2 people drove between 11 and 20 miles, 3 people drove between 21 and 30 miles, and 2 people drove between 31 and 40 miles on Saturday.

Line Plots, Frequency Tables, 6 -4 and Histograms A histogram is a bar graph that shows the number of data items that occur within each interval.

Line Plots, Frequency Tables, 6 -4 and Histograms Additional Example 4: Making a Histogram Use the frequency table in Additional Example 3 to make a histogram. Step 1: Choose an appropriate scale and interval. Step 2: Draw a bar for the number of students in each interval. The bars should touch but not overlap. Step 3: Title the graph and label the axes.

Line Plots, Frequency Tables, 6 -4 and Histograms Check It Out: Example 4 Use the frequency table in Check It Out: Example 3 to make a histogram. Step 1: Choose an appropriate scale and interval. Step 2: Draw a bar for the number of students in each interval. The bars should touch but not overlap. Students Step 3: Title the graph and label the axes. Number of Pages Read Last Weekend Number of Pages